Every major scientific institution dealing with climate, ocean, and/or atmosphere agrees that the climate is warming rapidly and the primary cause is human CO2 emissions. In addition to that list, see also this joint statement (PDF) that specifically and unequivocally endorses the work and conclusions of the IPCC Third Assessment report. The statement was issued by:

Academia Brasiliera de Ciencias (Brazil)

Royal Society of Canada

Chinese Academy of Sciences

Academie des Sciences (France)

Deutsche Akademie der Naturforscher Leopoldina (Germany)

Indian National Science Academy

Accademia dei Lincei (Italy)

Science Council of Japan

Russian Academy of Sciences

Royal Society (United Kingdom)

National Academy of Sciences (United States of America)

You can also read this statement [PDF], which includes all the above signatories plus the following:

Australian Academy of Sciences

Royal Flemish Academy of Belgium for Sciences and the Arts

Caribbean Academy of Sciences

Indonesian Academy of Sciences

Royal Irish Academy

Academy of Sciences Malaysia

Academy Council of the Royal Society of New Zealand

Royal Swedish Academy of Sciences

But if scientists are too liberal and politicians too unreliable, perhaps you find the opinion of key industry representatives more convincing:

BP, the largest oil company in the UK and one of the largest in the world, has this opinion:

There is an increasing consensus that climate change is linked to the consumption of carbon based fuels and that action is required now to avoid further increases in carbon emissions as the global demand for energy increases.

Shell shares the widespread concern that the emission of greenhouse gases from human activities is leading to changes in the global climate.

Eighteen CEOs of Canada’s largest corporations had this to say in an open letter to the Prime Minister of Canada:

Our organizations accept that a strong response is required to the strengthening evidence in the scientific assessments of the Intergovernmental Panel on Climate Change (IPCC). We accept the IPCC consensus that climate change raises the risk of severe consequences for human health and security and the environment. We note that Canada is particularly vulnerable to the impacts of climate change.

Have the environazis seized the reigns of industrial power, in addition to infiltrating the U.N., the science academies of every developed nation, and the top research institutes of North America? That just doesn’t seem very likely.

More in the How to Talk to a Climate Skeptic: Responses to the most common skeptical arguments on global warming series